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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures Development Department Hazards and Hazardous Materials Impact HAZ-7: Located within 2 Miles of a Public Airport or Private Airstrip and Result in a Safety Hazard for People Residing or Working in the Project Area (No Impact) The airports nearest the project site are the New Jerusalem Airport, approximately 3.5 miles northeast of the site; the Tracy Municipal Airport,which is more than 8 miles northwest of the site;and the Crows Landing Flight Facility, which is located more than 20 miles to the southeast. The project site is not — within 2 miles of a public airport or public use airport and does not have the potential to result in a safety hazard for people residing or working in the project area. No impacts would occur. No mitigation is required. _ Impact HAZ-8: Expose People or Structures to a _ Significant Risk of Wildland Fires (Less than Significant with Mitigation Incorporated) The project site is not located in an area considered to be a high wildfire hazard area(San Joaquin County 2000). Quarry operations have an inherent fire risk because operations include the storage and use of flammable materials, such as oil, diesel fuel,propane, and gasoline. The storage and use of flammable materials is strictly regulated, and the Applicant would be required to prepare emergency response plans for the facility before the start of operations. However,because flammable materials would be present in the project area, there is a potential for fires to occur. Implementation of Mitigation Measure HAZ-2a,which requires the Applicant to prepare and submit an HMMP to San Joaquin County OES for any on-site storage of more than 55 gallons of a liquid, 500 pounds of a solid, or 200 cubic feet of a gas,would ensure that potential impacts related to use and storage of flammable materials at the site would be less than significant. In addition, to prevent any fires that may occur on the site from spreading to neighboring properties, the Applicant would be required to implement the fire safety recommendations of the Tracy Fire Department,which provides fire protection services to the area. Implementation of the following mitigation measure would ensure that potential fire hazards are reduced to less-than- _ significant levels. Mitigation Measure HAZ-8: Implement Fire Safety _ Recommendations of the Tracy Fire Department In addition to meeting the requirements of the Business Plan Act(see Mitigation Measure HAZ-2a),the operator shall have the San Joaquin County Fire Department perform an initial fire safety inspection before the start of operations, as well as annual inspections during the life of the proposed Project. After each inspection,the operator shall implement any requirements or recommendations of the fire department. These — DeSilva Gates Quarry Project Draft Environmental Impact Report 3.1-14 Jas 0105,05